1.Clinical study of Ni-Ti shape memory alloy embracing fixator for multiple rib fractures
Xinqiang LI ; Jun YI ; Jiashou DONG
Journal of Clinical Surgery 2014;(6):444-446
Objective To summarize the experience of diagnosis,treatment and clinical effects of Ni-Ti shape memory alloy embracing fixator for severe chest trauma complicated with multiple rib frac-tures.Methods From January 2009 to June 2013,the clinical data of 148 cases with embracing fixator and 47 cases with non-internal fixation were retrospectively analyzed and compared.Results Internal fix-ation was superior to non-internal fixation in hospital stay,pain perception,mechanical ventilation time, pulmonary function recovery and complications(P<0.05).Conclusion Ni-Ti shape memory alloy em-bracing fixator is better than other conservative therapies in the treatment of multiple rib fractures and it's worthy of spreading.
2.Comparison and evaluation of abnormal result detection methods of platelet
Xuebin MA ; Ming YANG ; Fang WANG ; Xinqiang HUANG ; Shuchun DING ; Jingyi WANG ; Youyou DONG ; Qiangyuan ZHAO
Chinese Medical Equipment Journal 2017;38(3):97-100
Objective To compare the clinical values of impedance method,optical method and microscopy when used to detect platelet abnormal results.Methods Platelet re-examinations by optical method and microscopy were carried out in case of low confidence degree in platelet test with impedance method by XE-2100 automatic hematology analyzer,and then the results by the three methods were compared.Results Most of the low-confidence-degree results by impedance method could be corrected by re-examination by optical method,and the remained had to turn to microscopy due to unsatisfied requirements of the instrument.Conclusion Optical method has to be involved to correct the platelet abnormal results by XE2100 automatic hematology analyzer,and microscopy should be applied in case optical method doesn't work.The three methods gains advantages and disadvantages of themselves,and can be supplementaries for one another.
3.Expression and clinical significance of T-lymphoma invasion and metastasis 1 protein in renal cell carcinoma
Qingze MENG ; Baoping QIAO ; Cuicui GONG ; Dehai LIU ; Xiqing ZHANG ; Qi LI ; Zhiyuan MA ; Xinqiang DONG
Chinese Journal of Urology 2011;32(12):815-818
Objective To explore the expression of Tiaml in clear cell renal cell carcinoma and analyze its correlations to pathology of disease and prognosis.Methods The expressions of Tiam1 protein in 107 specimens of human clear cell renal cell carcinoma and 20 specimens of normal renal tissues were detected by immunohistochemical staining and its clinical significance was then analyzed.Results The expression of Tiam1 protein was higher in renal cancers than in the adjacent normal tissues ( P < 0.01 ).Tiam1 protein expression rates were 47.6% and 72.7% in Ⅰ - Ⅱ and Ⅲ - Ⅳ tumors,while 49.3% and 76.5% in T1 - T2 and T3 - T4 tumors,respectively ( P < 0.01 ).Expression of Tiam1 protein was higher in lymph node positive renal carcinoma tissues than in lymph node negative renal carcinoma tissues ( 71.7% versus 47.5%,P < 0.05 ).The expression of Tiam1 in carcinoma tissues showed a positive relationship with tumor vascular invasion (81.3% versus 48.0%,P < 0.01 ).In patients followed-up 5 - 8 years,Kaplan-meier analysis and the log-rank test showed that the 5-year survival was significantly different between the group of lower and higher Tiaml expression groups ( 84.4% versus 46.8%,P < 0.05 ).Conclusions The expression of Tiaml protein was higher in human primary renal carcinoma than in normal renal tissues.The positive rate of Tiam1 protein expression was related to classification,TNM stage,lymph node metastasis and vascular invasion.The detection of the expression of Tiaml protein may be helpful in the diagnosis and prognosis of renal carcinoma.
4.Alpha-galactosylceramide loaded tumor cells in combination with TLR9 agonists induce potent anti-tumor responses in a murine model of colon cancer
Tiangeng DONG ; Tuo YI ; Xinqiang HONG ; Mengxuan YANG ; Shengli LIN ; Xingyuan XU ; Wenxiang LI ; Weixin NIU
Chinese Journal of Microbiology and Immunology 2014;(7):491-497
Objective To design a new cancer vaccine by using alpha-galactosylceramide (α-Galcer,α-GC) loaded tumor cells in combination with TLR 9 ligand and to evaluate its therapeutic effects on colon canc-er in mice.Methods MC38 cells were transfected with lentivirus (GFP-CD1d) to prepare CD1d-MC38 cells. The expression of CD1d molecules in CD1d-MC38 cells was detected by fluorescence microscopy , RT-PCR and flow cytometry.The sorted CD1d-MC38 cells were loaded with α-Galcer to prepare CD1d-MC38/α-GC complex. Flow cytometry was performed to evaluate the efficiency of combination .A mouse model of colon cancer was es-tablished to investigate the therapeutic effects of α-Galcer loaded tumor cells in combination with TLR 9 ligand ( CD1d-MC38/α-GC+CpG1826) on colon cancer in mice by analyzing tumor growth and mice survival time .Im-munohistochemical staining was used to detect CD 4+T and CD8+T infiltrating lymphocytes in tumor tissues .Re-sults The MC38 cancer cells that expressed CD 1d and GFP were successfully constructed , among which 98.10%±2.53%were positive for CD1d.Moreover, the CD1d-MC38 cells could combine with α-Galcer effec-tively in a dose and time dependent manner .Compared with PBS treated group ,α-GC treated group and TLR9 ligand treated group , the experimental vaccine strategy was sufficient to inhibit the growth of established tumors and prolong survival of tumor-bearing mice (P<0.01).Immunohistochemistry analysis revealed that levels of CD4+T cells and CD8+T cells in experiment group were significantly higher than those in groups treated with PBS,α-GC and TLR9 ligand (P<0.01).Conclusion CD1d-MC38/α-GC in combination with CpG1826 could efficiently inhibit the growth of established tumors and prolong survival of tumor-bearing mice .Immunohisto-chemistry analysis revealed that CD 4+T cells and CD8+T cells played important roles in anti-tumor immunity.
5.Development strategy of cancer hospitals under normalized epidemic prevention and control based on a PEST analysis
Fanghui GU ; Xiyao ZHONG ; Jianying WANG ; Jiuping GUAN ; Xinqiang JI ; Dong XUE ; Jiafu JI
Chinese Journal of Hospital Administration 2021;37(1):15-20
Objective:To explore the external factors of the development of cancer hospitals under normalized epidemic prevention and control, and to propose targeted strategies in accordance with existing practice.Methods:PEST model was used to analyze the political, economic, social and technological environment of specialized cancer hospitals, with an overall strategy proposed based on the specific analysis of a cancer hospital.Results:In the era of normalized epidemic prevention and control, cancer hospitals were facing a new environment that was common or unique to other types of medical institutions. In response, the case hospital had adopted such strategies as integrating prevention and control with medical services, integrating offline with online services, and integrating internal and external resources to promote its recovery and development.Conclusions:Cancer hospitals and government should fully leverage the environmental changes incurred by the normalization of prevention and control, and formulate a more integrated development strategy covering short, medium up to long term conditions, based on the two major objectives of epidemic prevention and control and cancer prevention and medical services.
6.Identification of scar animal models with method of picric-sirius red polarized light
Bin ZHU ; Jiayuan ZHU ; Tao ZHANG ; Bing TANG ; Xinqiang LI ; Shusen ZHENG ; Dong CHEN ; Wei ZHANG ; Shuang LI
Chinese Journal of Tissue Engineering Research 2006;10(12):182-183,插5
BACKGROUND: Stable reliable experimental animal models are needed urgently in scar research.OBJECTIVE: Scar animal models of nude mice are evaluated with histological method to define optimal opportunity for using.DESIGN: Randomizly controlled and repetitively measured design.SETTING: Department of Burn, First Affiliated Hospital, Sun Yat-sen University.MATERIALS: The experiment was conducted at the Center for Animal Experiment, Medical College, Sun Yat-sen University between January 2004 and March 2004. Fifteen nude mice aged 4-6 weeks were provided by Center for Animal Experiment, Medical College, Sun Yat-sen University (of either gender with body mass of 15-25 g). Hyperplastic scar was gained from samples of exairesis in patients with burn after healing which is hyperplastic scar for half a year.METHODS: Human hyperplastic scar was grafted at dorsa of nude mice to establish scar animal models. After graft for four weeks, 5 experimental animals were killed every week, and grafts were gained. 100 g/L formalin was used to fix samples for 3 weeks. Picric-sirius red polarized light method was used to detect the graft and clinical materials, and histological feature was observed.MAIN OUTCOME MEASURES: ①Results of film reading of picric-sirius red polarized light method. ②Analytic result of computer image.RESULTS: ①Results of film reading of picric-sirius red polarized light method: The grafts showed the same feature of diffused distribution of mainly yellow and red thick fiber with thin-mesh green fiber under polarized light in every time segment group. ②Analytic result of computer image: In clinicopathological hyperplastic scar, type Ⅰ collagen was about 74%; type Ⅲ collagen accounted for about 26%. In the graft from 4-6 weeks, the contents of type Ⅰ collagen were (74.52 ±0.47)% , (74.43 ±0.53)% ,(74.69±0.63)%, respectively; The contents of type Ⅲ were (25.48±0.47)%, (25.57±0.53)%, (25.31±0.63)%, respectively, which had insignificant difference (P > 0.05 ).CONCLUSION: In the time segment designed by experiment, the feature of graft and clinical material is coincident, which is accorded with the characteristics of hyperplastic scar. The detection of collagen of scar tissue with picric-sirius red polarized light method is a simple effective method for assessing the tissue of hyperplastic scar. Establishing scar models with nude mice is effective and stable.
7. Effect of uncoupling protein 2 gene on radiation sensitivity of Siha cells
Cuihua LIU ; Xinyu DONG ; Yuanhang LI ; Xinqiang ZHANG ; Zhicheng WANG ; Gang ZHAO ; Yannan SHEN
Chinese Journal of Radiological Medicine and Protection 2020;40(2):88-93
Objective:
To investigate whether silencing UCP2 can sensitize cervical cancer cell line Siha to radiation.
Methods:
Siha cells were transfected with UCP2 siRNA and then irradiated by X-ray. The radiosensitivity of Siha cells was verified by colony formation, CCK-8, apoptosis and immunofluorescence assays. The mitochondrial membrane potential and the production of reactive oxygen species (ROS) were detected to further explore the related mechanism.
Results:
RT-PCR and Western blot assays showed that the expression of UCP2 in Siha cells was increased after irradiation and the UCP2 siRNA successfully silenced the expression of UCP in cells. According to the survival curves, the